Exercise bar



FIG. 1 is a perspective view of the exercise bar;

FIG. 2 is a top view;

FIG. 3 is a bottom view;

FIG. 4 is a left side view;

FIG. 5 is a right side view;

FIG. 6 is a front view; and,

FIG. 7 is a back view.

The broken line showing of a handle depicts environment and forms no part of the claim. 

CLAIM The ornamental design for an exercise bar, as shown and described. 